Auxtliaby tike-valve



T. 1; STEPHENS. AUXILIARY TIRE- VALVE. APPLICATION FILED er-1 1214,. 19w.

1,304; 16. Patented M 320, i919.-

- Ax I t ject to pnovid tire valve UNITED STATES omen.

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Application filed September 14, 1918. Serial No. 254,034. 1

To all whom it may concern:

Be it known that I, 'IHoms Jameson STEPHENS, citizen of the United'States, residing at Spokane, in the county of Spokane and State of Washington, have invented certain new and useful Improvements in Auxiliary Tire-Valves, ing is a specification.

This invention relates auxiliary valve for motor has as its primary struction wherein he air pressure in the tires of a vehicle may be readily ascertained Without the necessi y for removing the dust caps commonly employed to cover the pro jecting ends of the usual tire valve casings.

The invention has as. a further object to provide an auxiliary tire valve which may be connected directly to the outer end of the usual tire valve casing to project through the dust cap fitting over the casing aflpressuregage may beapplied overthe auxiliary valve for ascerta' the air pressure ofthe tire without the necessity for removing the dust cap.

A still furtherobjectof the invention is to provide an auxiliary tire valve which will be formed to tion fi'oma source of air supply so that the tire may be inflated directly through the valve.

Andthe invention has a still further obe an auxiliary valve which, when applied to the usual tire valve casing,

to an improved vehicle tires and will form an added safeguard against possible leakage of air from the tire.

Other and incidental objects will appear during the course of the detailed descnption of the invention. In the drawings, wherein I have illustrated the preferred embodiment of the invention, and wherein similar reference characters design parts throughout the several views:

llgure 1 is a fragmentary perspective viewshowing my improved valve applied to the va ve casing of 'aconventional type of which is illustrated with an ordinary wheel felly and pneumatic Fig. 2 is a vertical particularly illustrating the details of struction of the device,

Fig. 3' isa-perspeetive view'showin the valve and'its guide indetail, g

Speoification of Letters Patent.

of which the followd object to provide a con,.

' and is so, that- .this valve mech receive the usual hose connec ate correspondin connection h sectional view more.

auxrnmnv rmn-vanvn.

Patented May 20, 1919.

Fig. is a. transverse sectional view taken on the l1n e H of Fig. 2, and

Fig. 5 1s a fragmentary perspective view showing a slight modification of the invention.

Referring now more particularly to the rawmgs, I have shown my improved auxiliary valve in connection with a conventlonal type of pneumatic tire Valve. convenience, a portion of a pneumatic has been conventionally illustrated at shown in connectlon of a wheel 'felly 11. Projecting from the tire 10,

tire through the felly in the usual manner is t e valve casing 12 of the'tire is threadedv a nut 13 abutting th of the fell threaded to. receive the ordinary h nection of an air supply for inflating the tire and usuall closure cap.

casing and depressible 'f carried by the innerend of the Stem. Since anism is well valve thereof has not been shown. Threadover the Valve casing to abut the nut 13 -1s a dust cap 16 and m order that the valve of the present invention may be applied to the casmg, this cap is formed at its outer end with a cylindrical axial ope 17.

' mlng now more particularly to the present invention, I employ a cy mdrlcal valve casing 18 which, at its tending axially within the casing 18 and threaded within the larger open end of the with a portion At its outer end th is d with a, reduced nipple 14 which is For known, the

is internally threaded to casing is a guide 24 for the stem. This guide is provided axially with a squared opening minal of the stem so that the guide will, therefore, direct the valve in its movement toward or away from its seat. At its larger end the valve overhangs the valve stem and interposed between the said valve and the guide 24 is a helical spring 26 surrounding the valve stem and acting to normally hold the vale projected through the end wall 20 of the casing in closed position engaging with its seat. As will be seen, a wrench or other suitable tool may be engaged in the squared opening 25 of the guide for adjusting the guide within the valvecasing to regulate the tension of the valve spring. However, it will be noted that the ide is preferably so positioned that when t e valve 21 is closed, the outer terminal of the valve stem will project only part way throu the opening 25 in the guide. Consequent y, when applying the valve casing 18 to the nipple 14, said casing maybe adjusted downwardly upon the nipple until the 'outer end of the valve stem 15 of the tire valve is received within said opening in close spaced relation to the outer end of the valve stem 22. Therefore, the guide 24 will also act to direct the outer end of the valve stem 15 when the tire valve is opened or closed and will hold the outer terminal of this stem in register with the outer terminal of the valve stem 22.

As will now only necessary, proved auxiliary valve, to first usual cap ordinarily carried by 14 of the tire valve casing 12 and casing 18 of onto the said nipple. The cap 16 is then applied, as shown in Figs. 1 and 2, when the device is read for use. Thus, it will seen that an or inary pressure gage may be applied to the nipple 19 of the auxiliary valve for depressingthe valve 21 and consequently shifting the valve stem 22 to engage the valve stem 15 and correspondingly depress the tire valve within the-casing 12 when the air within the the 10 will be permitted to flow up through the casings 12 and 18 and into the gage for re 'stering a readin of the air pressure the tire. As

be readily understood, it is remove the the nipple thread the wit 1n 1 be clear, this operation may be readily accomplished without the necessity of removing'the dust cap 16 so that in any instance where the tires of a vehicle are equipped with my improved auxiliary valve a reading of the air ressure within each 0 the tires may be easi y and quickly obtained without the necessity for the removal of any of the dust caps of the tire valve casings of the tires. Furthermore, as will be understood in view of the preceding description, the tires of the vehicle may be inflated with 25 slidably receiving the free terin order to apply my imthe auxiliary valve directly a minimum of dificulty by applying the hose connection of any suitablesource of air supply directly to the nipple 19 of each of the auxiliary valves and since these valves are pring pressed and are normally held in closed position, it will be seen that said valves will also provide an added safeguard against possible leakage of air from the tires of the vehicle.

In Fig. 5 of the drawings, I have illustrated a slight modification of the invention wherein the casing of the improved valve is formed at its upper end with a reduced nipple 26 corresponding to the nipple 19 of the preferred construction but instead of being so smooth as in the preferred embodiment of the invention, the nipple 26 is externally screw threaded for receiving the hose connection of a suitable source of air supply. Otherwise, the modification is identical with the preferred construction. Further descri tion is accordingly unnecessary.

aving thus described the invention, what is claimed as new is: t

1. An auxiliary valve for pneumatic tires includin a casing open at its inner end and rovid at its outer end with a valve seat, and a valve mounted to reciprocate within said casing and including a valve body normally engaging said seat projecting exteriorily of the casing, the casing being adapted for attachment at its inner end outer end of a tire valve casing whereby the valve body of the auxiliary valve may be depressed for opening the tire valve.

2. The combination with a tire valve casing, a valve arranged within the casing and having a stem depressible for opening the valve, and a dust ca fitting over the casing, of an auxiliary valve including a casing fitting over the outer end of the tire valve asing and projecting through the dust cap,

b a valve reciprocable within the auxiliary casing and provided with a stem movable to depress the stem of the tire valve, and means normally holding the auxiliary valve closed.

3. The combination with a tire valve casing, a valve arranged within the casing and having a stem depressible for opening the valve, and a dust cap fitting over the casing, of an auxiliary valve including a casing fitting over the outer end of the tire valve casing and projecting through the dust cap a nipple formed fiom the outer extremity oi the auxilia casing and adapted to receive an air supp y hose connection, a valve reciprocable within the auxiliary casin and vided with a stem movable to epress the stem of the tire valve, and means noally holdir filthe auxiliary valve closed 4'. ecombination with atirevalvecasing, avalve arranged within the casing and having a stem depressible for opening the valve, and a dust cap fittin over the casing, oi an auxiliary valve inc uding a g ng 130 over the outer end 7 and means normally of the "tire valve casing and projec through the dust cap, a valve stem guide within the auxiliary casing, a valve reciprocable within the auxiliary casng and provided with a stem enga edwith- 1n the guide and centered thereby or movement to depress the stem of the tire valve,

holding the auxiliary valve closed.

5. The combination with a tire valve casing, a valve arranged within the casing and hava stem depressible for opening the valve, 331% a dust cap fitting over the casing, of an auxiliary valve including a casing fitting over the outer end of the tire valve and project' through the dust cap, a valve stem guide wlthin the auxiliary casing prw vided with an opening therethrough receiving the outer end of the tire valve stem, a valve reeiprocable within the auxiliary casing and provided with a stem received at its outer end within the opening of the guide and held thereby for movement to depress the stem of the tire valve, and means normally holding the auxiliary valve closed.

6. The combination with'a tire valve casing,a valve arranged within the casing and having a stem depressible for opening theval've, anda dust cap fi over the casing, ofan auxiliary valve inc u a casing fitting over the outer end of the tirewalve casing and projectin through the dust cap, a valve stem guide within the auxiliary oasing, an auxilia .valve within said auxilia easmgprovid wlth a stem engaged 't said guide and movable to depress the stem of the tire valve, and a spring bearing between the auxiliary valve and the guide ,and holding such valve closed, the guide being adjustable within the auxiliary for regulating the tension of said spring.

In testimony whereof I aflix my slgnature.

. Mons JEFFERSON snarlmns [1. t1 

